Hello , can I help you ?   Yes , my engine warning light is on .   How long has it been on for ?   Just since today .   You can still drive , without problems .   It runs fine .   Let's check it out . There'll be a $ 45 charge to check it over . If you fix it with us , we'll include the $ 45 into your repair .   Okay .   Please write down your address and phone number , and sign here .   Okay .   It'll be about an hour . Are you going to wait ?   No , you can give a call when you have done checking .   No problem . 